Harry Julius Shearer is an American comedic actor and writer. In August 1979, he became a writer and cast member on “Saturday Night Live.” He later co-created, co-wrote and co-starred in Rob Reiner’s 1984 film “This Is Spinal Tap”. He has three books published, “Man Bites Town,” “It’s the Stupidity, Stupid,” and “Not Enough Indians.”
Shearer is probably best known for his prolific work as a voice actor on “The Simpsons” (1989 to present), where he provides voices for many characters, including Burns, Ned Flanders, and Principal Seymour Skinner among others. In May 2006, Shearer was awarded an honorary doctorate from Goucher College.
Source - Wikipedia
http://en.wikipedia.org/wiki/Harry_Shearer